Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

View list

Fix Chrome Profile File Locked After Crash

If Chrome crashes and you see a message that your profile file is locked, it usually means Chrome...

Fix Task Scheduler Not Running Due to Login Loop

You set up a scheduled task, but it never runs. Instead, the status shows "Running" or "Queued" a...

Fix Windows Defender SSL Certificate Error Not Working

You might see an error like 'Windows Defender cannot check for definitions because of an SSL cert...

Fix Microsoft Store Auto-Start Not Working After Windows Update

After a Windows update, you may notice that apps from the Microsoft Store no longer start automat...

Fixing ERR_SSL_PROTOCOL_ERROR Certificate Issues

You try to visit a website or connect to a service, and the browser shows ERR_SSL_PROTOCO...

Checklist to Diagnose Chrome Profile High CPU Usage
If Chrome is using 90%–100% of your CPU even with just a few tabs open, the problem is often the ...